2,174 research outputs found
À quelles conditions la Loi fonctionne-t-elle come Bonne Nouvelle selon l'Évangile de Marc?
Malgrat que és l’únic evangelista que mai fa servir la paraula «llei» (nomos), Marc tanmateix té la seva
pròpia perspectiva d’aquest tema tan important en el Judaisme, la religió en la qual el moviment de Jesús
va néixer. L’article està consagrat a estudiar la discussió referent a la impuresa en Mc 7,1-23, una perÃcopa
que constitueix una clau de gran significació per entendre el tema de la llei. Pres com un tot, sembla que
Marc no és antinòmic. En el seu punt de vista, la llei roman com a bona notÃcia, però sota certes condicions:
ha de estar sotmesa a l ‘Evangeli del Regne de Déu i a les seves claus interpretatives de vida
Existence and Stability of Propagating Fronts for an Autocatalytic Reaction-Diffusion System
We study a one-dimensional reaction-diffusion system which describes an
isothermal autocatalytic chemical reaction involving both a quadratic (A + B ->
2B) and a cubic (A + 2B -> 3B) autocatalysis. The parameters of this system are
the ratio D = D_B/D_A of the diffusion constants of the reactant A and the
autocatalyst B, and the relative activity k of the cubic reaction. First, for
all values of D > 0 and k >= 0, we prove the existence of a family of
propagating fronts (or travelling waves) describing the advance of the
reaction. In particular, in the quadratic case k=0, we recover the results of
Billingham and Needham [BN]. Then, if D is close to 1 and k is sufficiently
small, we prove using energy functionals that these propagating fronts are
stable against small perturbations in exponentially weighted Sobolev spaces.
This extends to our system part of the stability results which are known for
the scalar Fisher equation.Comment: 32 pages, 1 Postscript figur
Analysis of POPs in 20μL blood by MEPS-GC-MS/MS
peer reviewe
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